<template>
    <div>
        <div ref='videoContainer' 
     :class="['myvideo-box',fullScreenState ? 'fullscreen' : '']"
      @mousemove='controlerShowControl(true)'
      @mouseup='controlerShowControl(false)'
      @click='controlerShowControl(true)'>
      <div class='myvideo'>
          <img v-show='posterShow' class='poster' :src='poster'/>
           <video ref='video' 
                   :class='[widthFix ? "widthFix" : "heightFix"]'
                   :poster="poster" 
                   :muted="mutedState"
                   :autoplay = 'autoplay'
                   :src='videourl'
                   @ended='playEndControler(false)'
                   @timeupdate='playUpdate'
                   @loadedmetadata='setDuration'>          
                   <source :src="videourl" type="video/mpg">           
           </video>
       </div>
      <transition name="fade">
          <div class="controls" v-show='controlerShow'>     
              <img class="play"
                  @click = 'playControler'
                  v-show='controlerShow'
                  :src = "playState ? '../../common/imgs/pause.png' : '../../common/imgs/play.png'" alt="">
              <!--进度条-->
              <div class='controller'>
                  <span style='width: 100px;'>{{currentTime}}</span>
                  <div class="myvideo-progress" 
                      :style='{"background":"linear-gradient(to right,#F25A0D 0,#F25A0D " + progress + ",#B7B6B6 " + progress + ",#B7B6B6 100%)"}' 
                      ref='progress' 
                      @mousedown.stop='progressOnDown' 
                      @touchstart.stop='progressOnDown'
                      @mousemove.stop='progressOnMove' 
                      @touchmove.stop='progressOnMove'
                      @mouseup.stop='progressOnUp' 
                      @mouseout.stop='progressOnUp'
                      @touchend.stop='progressOnUp'>        
                      <span class='circle-progress' :style='{left:progress}'></span>           
                  </div>
                  <span style='width: 100px;'>{{duration}}</span>  
                  <div class="voice-control">
                      <span class='voice-progressbox'
                               v-if='voiceProgressShow'                     
                               @mousedown.stop='voiceOnDown' 
                               @touchstart.stop='voiceOnDown'
                               @mousemove.stop='voiceOnMove' 
                               @touchmove.stop='voiceOnMove'
                               @mouseup.stop='voiceOnUp' 
                               @touchend.stop='voiceOnUp'>               
                           <span class='voice-progress' 
                               :style='{"background":"linear-gradient(to top,#F25A0D 0,#F25A0D " + voiceProgress + ",#B7B6B6 " + voiceProgress + ",#B7B6B6 100%)"}'
                               ref='voiceProgress' >
                               <span class='voice-progress-dot' :style='{bottom:voiceProgress}'></span>
                           </span>
                       </span>
                       <img style='margin:0px 10px;' :src="mutedState ? '../../common/imgs/mute.png' : '../../common/imgs/sound.png'" @click='() => { this.voiceProgressShow = true }' alt="">
                   </div>
                  <img style='margin:0px 10px;'  :src="fullScreenState ? '../../common/imgs/fullscreen-shrink.png' : '../../common/imgs/enlarge.png'" 
                      class="fullscreen"
                      @click='toggleFullscreen'
                      alt="">
              </div>
          </div>
      </transition>
  </div>
    </div>
</template>
<script>
export default {
    props:{
        videourl: String,
        poster: String,
        fullscreen: Boolean,
        autoplay:Boolean
    },
data: () => {
     return {
         playState:false,
         voiceProgressShow:false,
         voiceProgress:'0%',
         voiceDrag:false,
         currentTime:'00:00',
         progress:'0%',
         progressDrag:false,// 进度条是否被鼠标拖拽
         duration:'00:00',
         fullScreenState: false,
         mutedState:false,
         controlerShow:true,
         controlerShowTimer:'',
         widthFix:true,
     }
 },
 methods:{
     setDuration(){// 视频准备完成时执行
          let video = this.$refs.video;
          if (video.videoWidth > video.videoHeight) {
              this.widthFix = true;
          } else {
              this.widthFix = false;
          }
          
          // 设置初始音量
            this.voiceProgress = '50%';
            video.volume = 0.5;
            
          this.duration = this.formatTime(this.$refs.video.duration)
      },
      toggleFullscreen(){// 切换全屏
          //this.fullScreenState = !this.fullScreenState;
           if(this.isFullScreen()){
                this.exitFullscreen()
            } else {
                this.requestFullscreen(document.querySelector('.myvideo-box'));
            }
      },
      isFullScreen () {
            return document.isFullScreen || document.mozIsFullScreen || document.webkitIsFullScreen
        },
        requestFullscreen(ele) {
            // 全屏兼容代码
            if (ele.requestFullscreen) {
                ele.requestFullscreen();
            } else if (ele.webkitRequestFullscreen) {
                ele.webkitRequestFullscreen();
            } else if (ele.mozRequestFullScreen) {
                ele.mozRequestFullScreen();
            } else if (ele.msRequestFullscreen) {
                ele.msRequestFullscreen();
            }
            this.fullScreenState = true;
        },      
        // 取消全屏
        exitFullscreen() {
            if (document.exitFullscreen) {
                document.exitFullscreen();
            } else if (document.webkitExitFullscreen) {
                document.webkitExitFullscreen();
            } else if (document.msExitFullscreen) {
                document.msExitFullscreen();
            } else if (document.mozCancelFullScreen) {
                document.mozCancelFullScreen();
            }
            this.fullScreenState = false;
        },
      controlerShowControl(show){// 控制controller的显示隐藏
          if (show) {
               clearTimeout(this.controlerShowTimer);
               this.controlerShowTimer = setTimeout(() => {
                   if (this.playState) {
                       this.controlerShow = false;
                       this.voiceProgressShow = false;
                   }           
               },3000)
          }
          
          this.controlerShow = show;
      },
      playControler(){// 播放按钮点击事件
          console.log('play')
          let video = this.$refs.video;
          if(video.paused || video.ended) {
              video.play()
              this.playState = true;
              this.posterShow = false;
          } else {
              video.pause();
              this.playState = false;
              // clearTimeout(this.controlerShowTimer);
          }
      },
      playEndControler(breakOff){
          this.currentTime = '00:00';
          this.progress = '0%';
          this.playState = false; 
          this.posterShow = true;
          video.currentTime = 0; 
          if(breakOff) {
              let video = this.$refs.video;
              if (!(video.paused || video.ended)) {       
                  video.pause();
              }
              if (this.autoplay) {// 如果父组件传入自动播放为true
                  this.playState = true;
              }
          }
          
      },
      stopVideo(){
            this.playState = false;  
            this.controlerShow = true;
            let video = this.$refs.video;
            if (!(video.paused || video.ended)) {       
                video.pause();
            }
        },
      playUpdate(){// 视频播放时进度更新
          if (this.$refs.video) {
              let currentTime = this.$refs.video.currentTime;
              let duration = this.$refs.video.duration;
              let progress = currentTime / duration * 100;
              this.currentTime = this.formatTime(currentTime);
              this.progress = progress*0.996 +'%';
          }
          
      },
      // 拖拽进度条相关
      progressOnDown(e){
          this.progressDrag = true;
          this.updateprogress(e.pageX || e.changedTouches[0].pageX);
      },
      progressOnMove(e){
          if (this.progressDrag) {
              this.updateprogress(e.pageX || e.changedTouches[0].pageX);
          }
      },
      progressOnUp(e){
          if (this.progressDrag) {
              this.progressDrag = false;
              this.updateprogress(e.pageX || e.changedTouches[0].pageX);
          }
      },
      updateprogress(ePageX) {// 更新进度条
          let progressRect = this.$refs.progress.getBoundingClientRect();
          var percent = 100 * (ePageX - progressRect.x) / progressRect.width;
          if(percent > 100) {
              percent = 100;
          }
          if(percent < 0) {
              percent = 0;
          }
          this.progress = percent*0.996 + "%";
          this.currentTime = this.formatTime(this.$refs.video.duration * percent / 100);
          this.$refs.video.currentTime = this.$refs.video.duration * percent / 100;
        },

	  voiceOnDown(e){
            this.voiceDrag = true;
            this.updateVoice(e.pageY || e.changedTouches[0].pageY);
            this.controlerShowControl(true);
        },
        voiceOnMove(e){
            if (this.voiceDrag) {
                this.updateVoice(e.pageY || e.changedTouches[0].pageY);
                this.controlerShowControl(true);
            }
        },
        voiceOnUp(e){
            if (this.voiceDrag) {
                this.updateVoice(e.pageY || e.changedTouches[0].pageY);
                this.voiceDrag = false;
                this.controlerShowControl(true);
            }
        },
        updateVoice(ePageY) {
            let progressRect = this.$refs.voiceProgress.getBoundingClientRect();
            // console.log(progressRect)
            var percent = 100 * (progressRect.y + progressRect.height - ePageY) / progressRect.height;

            if(percent > 100) {
                percent = 100;
            }
            if(percent < 0) {
                percent = 0;
                this.mutedState = true;
            } else {
                this.mutedState = false;
            }
            this.voiceProgress = percent * 0.85 + "%";
            this.$refs.video.volume = percent / 100;
        },
        formatTime(seconds) {
          var minute = Math.floor(seconds / 60);
          if(minute < 10) {
              minute = "0" + minute;
          }

          var second = Math.floor(seconds % 60);
          if(second < 10) {
              second = "0" + second;
          }
          return minute + ":" + second;
      },
  },
  mounted(){
      if (this.autoplay) {
          this.playState = true;
          this.posterShow = false;
            this.$nextTick(() => {
                this.controlerShowTimer = setTimeout(() => {
                    this.controlerShow = false;
                },5000)          
            })
      }
      document.addEventListener('mouseup',this.progressOnUp,false);
  },
}
</script>
<style lang="scss">
    .myvideo-box {
    position: relative;
    display: inline-block;
    text-align: center;
    overflow: hidden;
}
.myvideo-box.fullscreen{
    position:fixed;
    left: 0;
    top:0;
    width: 100%;
    height: 100%;
    background-color: #000;
}  

/* .myvideo中含video和poster(img)两个标签 */
.myvideo-box .myvideo{
    position: relative;
    width: 100%;
    height: 100%;
}
.myvideo-box .myvideo .poster{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}
.myvideo-box video.heightFix {
    height: 100%;
}

.myvideo-box video.widthFix {
    width: 100%;
}


.myvideo-box .controls {
    width: 100%;
    color: #fff;
   
    font-size:35px;
    height: 60px;
}     

.myvideo-box .play{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    width: 8rem !important;
    height: 8rem !important;
} 

/* controller相比controls少了播放暂停的功能按钮 */
.myvideo-box .controls  .controller{
    position: absolute;
    left: 0px;
    /* bottom: 20px; */
    width: 100%;
    padding: 5px 18px;
    bottom: 0px;
    padding-bottom: 25px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background:linear-gradient(rgba(0,0,0,0) 0%,rgba(0,0,0,0.8) 80%,rgba(0,0,0,0.8) 100%);
}    
.myvideo-box.fullscreen .controls  .controller{
     /* bottom: 50px; */
    padding-bottom: 55px;
}
.myvideo-box .controller img {
    height: 45px !important;
}
.myvideo-box .controller img:last-child {
    height: 35px !important;
}
.myvideo-box.fullscreen .controller img {
    width: 45px !important;
    height: 45px !important;
    cursor: pointer;
}

/* controller进度条 */
.myvideo-box .myvideo-progress {
    display: inline-block;
    width: 90%;
    height: 6px;
    line-height: 6px;
    border-radius: 5px;
    vertical-align: super;
    position: relative;
}    
.myvideo-box .myvideo-progress .circle-progress{
    display:inline-block;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: #fff;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.myvideo-box .voice-control {
    position: relative;
}
.myvideo-box .voice-control img{
    position: relative;
    top: 3px;
}
.myvideo-box .voice-control .voice-progressbox{
    position: absolute;
    left: 50%;
    transform: translate(-50%);
    top: -110px;
    background-color: rgba(0,0,0,0.5);
    width: 2rem;
    border-radius: 5px;
    padding: 10px 0px 0px;
}
.myvideo-box .voice-control .voice-progress{
    position: relative;
    /* top: 10px; */
    display:inline-block;
    width: 6px;
    height: 80px;
    border-radius: 3px;
    background-color: #fff;
}
.myvideo-box .voice-progress .voice-progress-dot{
    display:inline-block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: #fff;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

/* controller淡入淡出 */
.fade-enter-active, .fade-leave-active {
    transition: opacity .5s;
}
.fade-enter, .fade-leave-to /* .fade-leave-active below version 2.1.8 */ {
    opacity: 0;
}
</style>